Knee walker crutch



FIG. 1 is a side elevational view a knee walker crutch, showing my new design, with the opposite side elevational view being identical thereto;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a knee walker crutch, as shown and described. 